摘要
目的:利用3D打印技术设计出一款既能提高儿童患者舒适性,又能提高放疗摆位精度的头枕。方法:以3至7岁中国儿童头颅大小为基础,并与博医来标准头枕模型相结合,利用3D打印技术,设计出一款适用于3至7岁儿童的放疗头枕。随机将30例3至7岁儿童头部肿瘤患者分为研究组和对照组,每组各15例。研究组采用3D打印放疗头枕加热塑膜联合固定,对照组则采用博医来标准头枕加热塑膜联合固定。记录研究组与对照组的单次照射透射率及两组儿童患者放疗过程中LAT(X)、LNG(Y)、VRT(Z)及3D矢量方向的位移误差,并采用Mann-Whitney U检验分析比较两组数据,以评估3D打印放疗头枕效果。结果:在VRT及3D矢量方向,研究组与对照组间的位移误差具有统计学意义(VRT方向:P<0.001;3D矢量方向:P=0.023),而在LAT及LNG方向,研究组与对照组间的位移误差无统计学意义(LAT方向:P=0.950;LNG方向:P=0.137)。结论:本研究提出的3D打印放疗头枕能有效减小VRT及3D矢量方向的位移误差,同时提高儿童放疗过程中的舒适性。
Objective To apply 3D printing technology in designing a headrest which can make pediatric patients more comfortable and improve the positioning accuracy in radiotherapy.Methods The pediatric headrest for 3-to 7-year-old pediatric patients were designed and manufactured by 3D printing technology,based on the head size of pediatric patients aging from 3 to 7 years old and BrainLab standard headrest.Thirty 3-to 7-year-old pediatric patients with brain tumors were randomly divided into research group and control group,with 15 cases in each group.The patients in research group were immobilized using 3D printed headrest with thermoplastic masks,while those in control group were immobilized by BrainLab standard headrest with thermoplastic masks.The single exposure transmittance and the setup errors in LAT(X),LNG(Y),VRT(Z)and 3D vector directions were recorded and analyzed by Mann-Whitney U test,thereby evaluating the clinical effects of 3D printed headrest.Results Statistical differences in setup errors between two groups were found in VRT direction(P<0.001)and 3D vector direction(P=0.023),and the differences in LAT and LNG directions were trivial,without statistical significance(LAT:P=0.950;LNG:P=0.137).Conclusion Using 3D printed headrest for pediatric patients with brain tumors can significantly reduce the setup errors in VRT direction and 3D vector direction,and improve the comfort during radiotherapy.
作者
邓官华
罗龙辉
吴伟
张平
戴鹏
罗日顺
黄庆
蔡林波
DENG Guanhua;LUO Longhui;WU Wei;ZHANG Ping;DAI Peng;LUO Rishun;HUANG Qing;CAI Linbo(Department of Oncology,Guangdong Sanjiu Brain Hospital,Guangzhou 510510,China)
出处
《中国医学物理学杂志》
CSCD
2019年第11期1272-1276,共5页
Chinese Journal of Medical Physics
基金
广东三九脑科医院新技术项目资助（2017012）
